QVector2D¶

The QVector2D class represents a vector or vertex in 2D space. More…

New in version 4.6.

Synopsis¶

Functions¶

def __add__ (, v2)
def __div__ (, divisor)
def __div__ (, divisor)
def __eq__ (, v2)
def __iadd__ (vector)
def __idiv__ (divisor)
def __idiv__ (vector)
def __imul__ (factor)
def __imul__ (vector)
def __isub__ (vector)
def __mul__ (, factor)
def __mul__ (, v2)
def __mul__ (factor)
def __ne__ (, v2)
def __reduce__ ()
def __repr__ ()
def __sub__ ()
def __sub__ (, v2)
def distanceToLine (point, direction)
def distanceToPoint (point)
def isNull ()
def length ()
def lengthSquared ()
def normalize ()
def normalized ()
def operator[] (i)
def setX (x)
def setY (y)
def toPoint ()
def toPointF ()
def toTuple ()
def toVector3D ()
def toVector4D ()
def x ()
def y ()

Static functions¶

def dotProduct (v1, v2)

Detailed Description¶

The QVector2D class can also be used to represent vertices in 2D space. We therefore do not need to provide a separate vertex class.

See also

QVector3D QVector4D QQuaternion

class PySide2.QtGui.QVector2D¶

PySide2.QtGui.QVector2D(point)

PySide2.QtGui.QVector2D(point)

PySide2.QtGui.QVector2D(vector)

PySide2.QtGui.QVector2D(vector)

PySide2.QtGui.QVector2D(xpos, ypos)

param ypos:

float

param point:

PySide2.QtCore.QPoint

param vector:

PySide2.QtGui.QVector3D

param xpos:

float

Constructs a null vector, i.e. with coordinates (0, 0).

Constructs a vector with coordinates (xpos , ypos ).

PySide2.QtGui.QVector2D.__reduce__()¶

Return type:: object

PySide2.QtGui.QVector2D.__repr__()¶

Return type:: object

PySide2.QtGui.QVector2D.distanceToLine(point, direction)¶

Parameters:

point – PySide2.QtGui.QVector2D
direction – PySide2.QtGui.QVector2D

Return type:

float

Returns the distance that this vertex is from a line defined by point and the unit vector direction .

If direction is a null vector, then it does not define a line. In that case, the distance from point to this vertex is returned.

See also

distanceToPoint()

PySide2.QtGui.QVector2D.distanceToPoint(point)¶

Parameters:: point – PySide2.QtGui.QVector2D
Return type:: float

Returns the distance from this vertex to a point defined by the vertex point .

See also

distanceToLine()

static PySide2.QtGui.QVector2D.dotProduct(v1, v2)¶

Parameters:

v1 – PySide2.QtGui.QVector2D
v2 – PySide2.QtGui.QVector2D

Return type:

float

Returns the dot product of v1 and v2 .

PySide2.QtGui.QVector2D.isNull()¶

Return type:: bool

Returns true if the x and y coordinates are set to 0.0, otherwise returns false .

PySide2.QtGui.QVector2D.length()¶

Return type:: float

Returns the length of the vector from the origin.

See also

lengthSquared() normalized()

PySide2.QtGui.QVector2D.lengthSquared()¶

Return type:: float

Returns the squared length of the vector from the origin. This is equivalent to the dot product of the vector with itself.

See also

length() dotProduct()

PySide2.QtGui.QVector2D.normalize()¶: Normalizes the currect vector in place. Nothing happens if this vector is a null vector or the length of the vector is very close to 1.

See also

length() normalized()

PySide2.QtGui.QVector2D.normalized()¶

Return type:: PySide2.QtGui.QVector2D

Returns the normalized unit vector form of this vector.

If this vector is null, then a null vector is returned. If the length of the vector is very close to 1, then the vector will be returned as-is. Otherwise the normalized form of the vector of length 1 will be returned.

See also

length() normalize()

PySide2.QtGui.QVector2D.__ne__(v2)¶